Flame cutting is a process for cutting larger steel thicknesses of steel. In order to obtain a sufficiently high temperature for flame cutting, a cutting torch is used which differs from a welding torch in that it has an additional supply of pure oxygen through a special nozzle.
The largest use of flame cutting takes place in the heavy steel industry, where the good cut quality in flame cutting is used for welding joints. The cutting speed in thin sheets is not as high as with plasma or laser cutting, but for larger wall thicknesses, flame cutting is fastest.
Plasma cutting is a process in which the sheet material is cut with a very hot air stream that melts the material in the joint. The air flow is heated by passing an electric arc and its temperature is 15000-20000 ° C, which causes atoms and electrons to be separated into a plasma.
Plasma cutting can be used for all types of materials. Steel can be cut into wall thicknesses of up to approx. 50 mm, and aluminum of up to approx. 200 mm. For steel cutting, we use ordinary air. One of the advantages of plasma cutting is that the high cutting speed provides little heating, which means that only small or minimal deformations occur.